Your Cart

Sierra 18-3569 Marine Thermostat Kit for Mercury/Mariner Outboard

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-3569
16 reviews
03/12/2036 6:25 PM
Sale Price

$21.34

In Stock (10+)

delivery box

Usually delivered within 2 days

Add To Cart

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3569 marine thermostat kit is designed for Mercury and Mariner 2-cycle outboard motors from 1987 and newer, covering 70 HP to 125 HP engine models. This complete replacement kit helps maintain optimal engine operating temperature for reliable performance and longevity.

Key Features:

  • 120°F temperature rating for precise cooling system control
  • Complete kit includes thermostat, thermostat gasket, and thermostat cover gasket
  • Direct OEM replacement for Mercury/Mariner outboard engines
  • Fits 1987 and newer 70-125 HP 2-cycle outboards
  • Marine-grade construction for saltwater and freshwater use

Sierra International is a trusted name in marine engine parts, manufacturing quality replacement components that meet or exceed OEM specifications. This thermostat kit ensures your outboard maintains proper engine temperature, preventing overheating and optimizing fuel efficiency.

Product was good and exactly what I ordered, but I expected it in 2 days as advertised on the website.

So far so good. So far very happy.

Arrived sooner than expected.

GOOD PRICING

Will use again

you have items I use an your sell prices are great thanks

..

Quick and easy.

Thanks

The experience was great thank you.

it was one of the most easiest sites to use and the order shipped really quick. will buy from again.

Best price around and good service.

Website is precise, loads quickly. easy shopping

Autoplicity was a great place to shop. By far the lowest price on the rack that I purchased. Fast shipping and overall very satisfied.<br><br>

Ordered Monday afternoon & it was here Wednesday! Can't get any better than that. Called prior to order & they were very helpful & without a long wait time either. I bookmarked them & will be sure to buy auto parts from them again. Thanks again.

Best price, excelient communication, on time shipping, Great place to do business !!!!!!!!! Thank You!!!! JY

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy